Art of manufacturing pocket straps or yokes.



A. G. SANDMAN.

ART OF MANUFACTURING POCKET STRAPS OR YOKES.

APPLICATION FILED JAN. 13, 1913.

1,064,999, Patented June 17, 1913.

%ITNES IIWENTOR A TTOR/VEV UNETEE STAg AUGUST G. SANDIVIAN, 0FBALTIMORE, MARYLAND.

ART OF MANUFACTURING POCKET STRAPS OR YOKES.

nocaeee.

Application filed January 13, 1913.

To all whom it may concern:

Be it known that 1, AUGUST G. SANDMAN, a citizen of the United States,residing at Baltimore city, in the State of Maryland, have inventedcertain new and useful Improvements in the Art of Manufacturing PocketStraps or Yokes; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to practise the same.

To facilitate the removal of a draw bar and coupler h aid from anassembled draft and bufling gear and the substitution of another, theend of the draw bar is slotted and a removable key is inserted withinthe slot, the projecting ends of which key are adapted to engage arms atthe front ends of a pocket strap or yoke. As the arms of the yoke arelocated at the sides of the draw bar and the space between the draw barand draft beams of the car is limited, it is de sirable to secure thegreateststrength possible with the least quantity or bulk of metal,consequently the pocket strap or yoke should be of malleable or wroughtmetal.

The object of my invention is the production of a strap or yoke bybending and forging a malleable metallic bar to the desired shapewhereby the greatest strength with the least quantity of metal will besecured.

With this end in view, the invention consists in the art or method ofprocedure herein set forth and claimed.

The accompanying drawing illustrates a blank, or partially preparedpiece of metal requiring further manipulation to be formed into afinished article constituting a pocket strap, and also a finished strapas a complete article ready for use.

Figures 1 and 2 are side and top plan views of a formed blank. Figs. 3and 4 are side and top plan views of a completed pocket strap or yoke,the position of the rear slotted end of a draw bar between the arms ofthe yoke being indicated by dotted lines.

A bar of wrought metal, for example 5 or 6 wide and 1 or more thick, andof the requisite length, is manipulated in forming the blank shown byFigs. 1 and 2. To

Specification of Letters Patent.

Patented June 1'3, 1913.

Serial No. 741,683.

fashion the blank shown by Figs. 1 and 2 a bar of metal intermediate itsends is forged between dies forming a slot A and flanges B B. The bar isthen bent upon itself intermediate the ends of the slot and the freeends at C welded together. It will be observed that the blankillustrated has a closed rear end, top and bottom parallel members, anda front end with uncompleted arms spaced apart, each arm being taperedtoward the end. To produce the completed pocket strap or yoke furthermanipulation is necessary and it consists in forging the end of theblank having the arms between suitable dies (not shown), spreading thearms apart far enough to receive the rear end of the draw bar,fashioning the flanges H H and the top and bottom flanges I I on thearms, and providing an increased thickness of metal at the points Kagainst which the ends of a key bear in the act of drawing.

From the foregoing description taken in connection with the drawings itbecomes clear that I have devised a simple and comparatively cheapmethod of manufacturing a malleable metal yoke or pocket strap ofmaximum strength with the least quantity of metal and which has armsthat can receive the rear end of a draw bar and oc cupy the limitedspace between the draft beams of a car floor frame, the said arms,moreover, being strong enough to withstand the strains of severe servicewithout breaking.

l Vhat I claim is:

The art of manufacturing a pocket strap,

consisting in taking a bar of metal, displac- Copies of this patent maybe obtained for five cents each, by addressing the Commissioner ofratents, Washington, D. G.

